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Finding the Fourth Proportional to 7,048.23, 9,726.56 and 3,905.03

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Solution

The fourth proportional to 7,048.23, 9,726.56 and 3,905.03 is: 5,388.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,048.23 : 9,726.56 = 3,905.03 : x
  2. Step 2: Convert to fraction form
    7,048.23/9,726.56 = 3,905.03/x
  3. Step 3: Cross multiply
    7,048.23x = 9,726.56 × 3,905.03
  4. Step 4: Simplify right side
    7,048.23x = 37,982,473.32
  5. Step 5: Solve for x
    x = 37,982,473.32/7,048.23
  6. Step 6: Final answer
    x = 5,388.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.